Installation: The direction of the standard fastening shaft is to set it in the horizontal direction. Changing the direction may cause oil leakage and may also cause the load direction to change. This may affect the performance and life of the motor.Axis Machining: Without notifying us, do not machine the motor shaft. This may cause damage to the gears and damage the cooperation between the gears.Rotation of the shaft (DC geared motor): Do not turn the shaft by hand when adjusting the installation direction. This makes the gear box become accelerated rather than decelerated, and the DC motor becomes a generator.Terminal welding: When the motor terminal wire is welded, please use the temperature of the iron 350 ~ 400 °C, 2-3 seconds, too high temperature or too long time will damage the motor terminals and connectors, especially metal brushes Motor.